drivers/net/wireless/mwifiex/sta_ioctl.c

   1 /*
   2  * Marvell Wireless LAN device driver: functions for station ioctl
   3  *
   4  * Copyright (C) 2011-2014, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "decl.h"
  21 #include "ioctl.h"
  22 #include "util.h"
  23 #include "fw.h"
  24 #include "main.h"
  25 #include "wmm.h"
  26 #include "11n.h"
  27 #include "cfg80211.h"
  28
  29 static int disconnect_on_suspend;
  30 module_param(disconnect_on_suspend, int, 0644);
  31
  32 /*
  33  * Copies the multicast address list from device to driver.
  34  *
  35  * This function does not validate the destination memory for
  36  * size, and the calling function must ensure enough memory is
  37  * available.
  38  */
  39 int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
  40                             struct net_device *dev)
  41 {
  42         int i = 0;
  43         struct netdev_hw_addr *ha;
  44
  45         netdev_for_each_mc_addr(ha, dev)
  46                 memcpy(&mlist->mac_list[i++], ha->addr, ETH_ALEN);
  47
  48         return i;
  49 }
  50
  51 /*
  52  * Wait queue completion handler.
  53  *
  54  * This function waits on a cmd wait queue. It also cancels the pending
  55  * request after waking up, in case of errors.
  56  */
  57 int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter,
  58                                 struct cmd_ctrl_node *cmd_queued)
  59 {
  60         int status;
  61
  62         /* Wait for completion */
  63         status = wait_event_interruptible_timeout(adapter->cmd_wait_q.wait,
  64                                                   *(cmd_queued->condition),
  65                                                   (12 * HZ));
  66         if (status <= 0) {
  67                 dev_err(adapter->dev, "cmd_wait_q terminated: %d\n", status);
  68                 mwifiex_cancel_all_pending_cmd(adapter);
  69                 return status;
  70         }
  71
  72         status = adapter->cmd_wait_q.status;
  73         adapter->cmd_wait_q.status = 0;
  74
  75         return status;
  76 }
  77
  78 /*
  79  * This function prepares the correct firmware command and
  80  * issues it to set the multicast list.
  81  *
  82  * This function can be used to enable promiscuous mode, or enable all
  83  * multicast packets, or to enable selective multicast.
  84  */
  85 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  86                                 struct mwifiex_multicast_list *mcast_list)
  87 {
  88         int ret = 0;
  89         u16 old_pkt_filter;
  90
  91         old_pkt_filter = priv->curr_pkt_filter;
  92
  93         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
  94                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
  95                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
  96                 priv->curr_pkt_filter &=
  97                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
  98         } else {
  99                 /* Multicast */
 100                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 101                 if (mcast_list->mode == MWIFIEX_ALL_MULTI_MODE) {
 102                         dev_dbg(priv->adapter->dev,
 103                                 "info: Enabling All Multicast!\n");
 104                         priv->curr_pkt_filter |=
 105                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 106                 } else {
 107                         priv->curr_pkt_filter &=
 108                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 109                         dev_dbg(priv->adapter->dev,
 110                                 "info: Set multicast list=%d\n",
 111                                 mcast_list->num_multicast_addr);
 112                         /* Send multicast addresses to firmware */
 113                         ret = mwifiex_send_cmd(priv,
 114                                                HostCmd_CMD_MAC_MULTICAST_ADR,
 115                                                HostCmd_ACT_GEN_SET, 0,
 116                                                mcast_list, false);
 117                 }
 118         }
 119         dev_dbg(priv->adapter->dev,
 120                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 121                old_pkt_filter, priv->curr_pkt_filter);
 122         if (old_pkt_filter != priv->curr_pkt_filter) {
 123                 ret = mwifiex_send_cmd(priv, HostCmd_CMD_MAC_CONTROL,
 124                                        HostCmd_ACT_GEN_SET,
 125                                        0, &priv->curr_pkt_filter, false);
 126         }
 127
 128         return ret;
 129 }
 130
 131 /*
 132  * This function fills bss descriptor structure using provided
 133  * information.
 134  * beacon_ie buffer is allocated in this function. It is caller's
 135  * responsibility to free the memory.
 136  */
 137 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
 138                               struct cfg80211_bss *bss,
 139                               struct mwifiex_bssdescriptor *bss_desc)
 140 {
 141         u8 *beacon_ie;
 142         size_t beacon_ie_len;
 143         struct mwifiex_bss_priv *bss_priv = (void *)bss->priv;
 144         const struct cfg80211_bss_ies *ies;
 145
 146         rcu_read_lock();
 147         ies = rcu_dereference(bss->ies);
 148         beacon_ie = kmemdup(ies->data, ies->len, GFP_ATOMIC);
 149         beacon_ie_len = ies->len;
 150         bss_desc->timestamp = ies->tsf;
 151         rcu_read_unlock();
 152
 153         if (!beacon_ie) {
 154                 dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
 155                 return -ENOMEM;
 156         }
 157
 158         memcpy(bss_desc->mac_address, bss->bssid, ETH_ALEN);
 159         bss_desc->rssi = bss->signal;
 160         /* The caller of this function will free beacon_ie */
 161         bss_desc->beacon_buf = beacon_ie;
 162         bss_desc->beacon_buf_size = beacon_ie_len;
 163         bss_desc->beacon_period = bss->beacon_interval;
 164         bss_desc->cap_info_bitmap = bss->capability;
 165         bss_desc->bss_band = bss_priv->band;
 166         bss_desc->fw_tsf = bss_priv->fw_tsf;
 167         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
 168                 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
 169                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 170         } else {
 171                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 172         }
 173         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
 174                 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 175         else
 176                 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
 177
 178         /* Disable 11ac by default. Enable it only where there
 179          * exist VHT_CAP IE in AP beacon
 180          */
 181         bss_desc->disable_11ac = true;
 182
 183         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_SPECTRUM_MGMT)
 184                 bss_desc->sensed_11h = true;
 185
 186         return mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc);
 187 }
 188
 189 void mwifiex_dnld_txpwr_table(struct mwifiex_private *priv)
 190 {
 191         if (priv->adapter->dt_node) {
 192                 char txpwr[] = {"marvell,00_txpwrlimit"};
 193
 194                 memcpy(&txpwr[8], priv->adapter->country_code, 2);
 195                 mwifiex_dnld_dt_cfgdata(priv, priv->adapter->dt_node, txpwr);
 196         }
 197 }
 198
 199 static int mwifiex_process_country_ie(struct mwifiex_private *priv,
 200                                       struct cfg80211_bss *bss)
 201 {
 202         const u8 *country_ie;
 203         u8 country_ie_len;
 204         struct mwifiex_802_11d_domain_reg *domain_info =
 205                                         &priv->adapter->domain_reg;
 206
 207         rcu_read_lock();
 208         country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
 209         if (!country_ie) {
 210                 rcu_read_unlock();
 211                 return 0;
 212         }
 213
 214         country_ie_len = country_ie[1];
 215         if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) {
 216                 rcu_read_unlock();
 217                 return 0;
 218         }
 219
 220         if (!strncmp(priv->adapter->country_code, &country_ie[2], 2)) {
 221                 rcu_read_unlock();
 222                 wiphy_dbg(priv->wdev->wiphy,
 223                           "11D: skip setting domain info in FW\n");
 224                 return 0;
 225         }
 226         memcpy(priv->adapter->country_code, &country_ie[2], 2);
 227
 228         domain_info->country_code[0] = country_ie[2];
 229         domain_info->country_code[1] = country_ie[3];
 230         domain_info->country_code[2] = ' ';
 231
 232         country_ie_len -= IEEE80211_COUNTRY_STRING_LEN;
 233
 234         domain_info->no_of_triplet =
 235                 country_ie_len / sizeof(struct ieee80211_country_ie_triplet);
 236
 237         memcpy((u8 *)domain_info->triplet,
 238                &country_ie[2] + IEEE80211_COUNTRY_STRING_LEN, country_ie_len);
 239
 240         rcu_read_unlock();
 241
 242         if (mwifiex_send_cmd(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 243                              HostCmd_ACT_GEN_SET, 0, NULL, false)) {
 244                 wiphy_err(priv->adapter->wiphy,
 245                           "11D: setting domain info in FW\n");
 246                 return -1;
 247         }
 248
 249         mwifiex_dnld_txpwr_table(priv);
 250
 251         return 0;
 252 }
 253
 254 /*
 255  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 256  * In both Ad-Hoc and infra mode, an deauthentication is performed
 257  * first.
 258  */
 259 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 260                       struct cfg80211_ssid *req_ssid)
 261 {
 262         int ret;
 263         struct mwifiex_adapter *adapter = priv->adapter;
 264         struct mwifiex_bssdescriptor *bss_desc = NULL;
 265
 266         priv->scan_block = false;
 267
 268         if (bss) {
 269                 mwifiex_process_country_ie(priv, bss);
 270
 271                 /* Allocate and fill new bss descriptor */
 272                 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
 273                                    GFP_KERNEL);
 274                 if (!bss_desc)
 275                         return -ENOMEM;
 276
 277                 ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
 278                 if (ret)
 279                         goto done;
 280         }
 281
 282         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
 283             priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
 284                 u8 config_bands;
 285
 286                 if (!bss_desc)
 287                         return -1;
 288
 289                 if (mwifiex_band_to_radio_type(bss_desc->bss_band) ==
 290                                                 HostCmd_SCAN_RADIO_TYPE_BG) {
 291                         config_bands = BAND_B | BAND_G | BAND_GN;
 292                 } else {
 293                         config_bands = BAND_A | BAND_AN;
 294                         if (adapter->fw_bands & BAND_AAC)
 295                                 config_bands |= BAND_AAC;
 296                 }
 297
 298                 if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands))
 299                         adapter->config_bands = config_bands;
 300
 301                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 302                 if (ret)
 303                         goto done;
 304
 305                 if (mwifiex_11h_get_csa_closed_channel(priv) ==
 306                                                         (u8)bss_desc->channel) {
 307                         dev_err(adapter->dev,
 308                                 "Attempt to reconnect on csa closed chan(%d)\n",
 309                                 bss_desc->channel);
 310                         goto done;
 311                 }
 312
 313                 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
 314                                       "associating...\n");
 315
 316                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 317                 if (netif_carrier_ok(priv->netdev))
 318                         netif_carrier_off(priv->netdev);
 319
 320                 /* Clear any past association response stored for
 321                  * application retrieval */
 322                 priv->assoc_rsp_size = 0;
 323                 ret = mwifiex_associate(priv, bss_desc);
 324
 325                 /* If auth type is auto and association fails using open mode,
 326                  * try to connect using shared mode */
 327                 if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
 328                     priv->sec_info.is_authtype_auto &&
 329                     priv->sec_info.wep_enabled) {
 330                         priv->sec_info.authentication_mode =
 331                                                 NL80211_AUTHTYPE_SHARED_KEY;
 332                         ret = mwifiex_associate(priv, bss_desc);
 333                 }
 334
 335                 if (bss)
 336                         cfg80211_put_bss(priv->adapter->wiphy, bss);
 337         } else {
 338                 /* Adhoc mode */
 339                 /* If the requested SSID matches current SSID, return */
 340                 if (bss_desc && bss_desc->ssid.ssid_len &&
 341                     (!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
 342                                        ssid, &bss_desc->ssid))) {
 343                         ret = 0;
 344                         goto done;
 345                 }
 346
 347                 priv->adhoc_is_link_sensed = false;
 348
 349                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 350
 351                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 352                 if (netif_carrier_ok(priv->netdev))
 353                         netif_carrier_off(priv->netdev);
 354
 355                 if (!ret) {
 356                         dev_dbg(adapter->dev, "info: network found in scan"
 357                                                         " list. Joining...\n");
 358                         ret = mwifiex_adhoc_join(priv, bss_desc);
 359                         if (bss)
 360                                 cfg80211_put_bss(priv->adapter->wiphy, bss);
 361                 } else {
 362                         dev_dbg(adapter->dev, "info: Network not found in "
 363                                 "the list, creating adhoc with ssid = %s\n",
 364                                 req_ssid->ssid);
 365                         ret = mwifiex_adhoc_start(priv, req_ssid);
 366                 }
 367         }
 368
 369 done:
 370         /* beacon_ie buffer was allocated in function
 371          * mwifiex_fill_new_bss_desc(). Free it now.
 372          */
 373         if (bss_desc)
 374                 kfree(bss_desc->beacon_buf);
 375         kfree(bss_desc);
 376         return ret;
 377 }
 378
 379 /*
 380  * IOCTL request handler to set host sleep configuration.
 381  *
 382  * This function prepares the correct firmware command and
 383  * issues it.
 384  */
 385 int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 386                           int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 387
 388 {
 389         struct mwifiex_adapter *adapter = priv->adapter;
 390         int status = 0;
 391         u32 prev_cond = 0;
 392
 393         if (!hs_cfg)
 394                 return -ENOMEM;
 395
 396         switch (action) {
 397         case HostCmd_ACT_GEN_SET:
 398                 if (adapter->pps_uapsd_mode) {
 399                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 400                                 " is blocked in UAPSD/PPS mode\n");
 401                         status = -1;
 402                         break;
 403                 }
 404                 if (hs_cfg->is_invoke_hostcmd) {
 405                         if (hs_cfg->conditions == HS_CFG_CANCEL) {
 406                                 if (!adapter->is_hs_configured)
 407                                         /* Already cancelled */
 408                                         break;
 409                                 /* Save previous condition */
 410                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 411                                                         .conditions);
 412                                 adapter->hs_cfg.conditions =
 413                                                 cpu_to_le32(hs_cfg->conditions);
 414                         } else if (hs_cfg->conditions) {
 415                                 adapter->hs_cfg.conditions =
 416                                                 cpu_to_le32(hs_cfg->conditions);
 417                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 418                                 if (hs_cfg->gap)
 419                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 420                         } else if (adapter->hs_cfg.conditions ==
 421                                    cpu_to_le32(HS_CFG_CANCEL)) {
 422                                 /* Return failure if no parameters for HS
 423                                    enable */
 424                                 status = -1;
 425                                 break;
 426                         }
 427
 428                         status = mwifiex_send_cmd(priv,
 429                                                   HostCmd_CMD_802_11_HS_CFG_ENH,
 430                                                   HostCmd_ACT_GEN_SET, 0,
 431                                                   &adapter->hs_cfg,
 432                                                   cmd_type == MWIFIEX_SYNC_CMD);
 433
 434                         if (hs_cfg->conditions == HS_CFG_CANCEL)
 435                                 /* Restore previous condition */
 436                                 adapter->hs_cfg.conditions =
 437                                                 cpu_to_le32(prev_cond);
 438                 } else {
 439                         adapter->hs_cfg.conditions =
 440                                                 cpu_to_le32(hs_cfg->conditions);
 441                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 442                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 443                 }
 444                 break;
 445         case HostCmd_ACT_GEN_GET:
 446                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 447                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 448                 hs_cfg->gap = adapter->hs_cfg.gap;
 449                 break;
 450         default:
 451                 status = -1;
 452                 break;
 453         }
 454
 455         return status;
 456 }
 457
 458 /*
 459  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 460  *
 461  * This function allocates the IOCTL request buffer, fills it
 462  * with requisite parameters and calls the IOCTL handler.
 463  */
 464 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 465 {
 466         struct mwifiex_ds_hs_cfg hscfg;
 467
 468         hscfg.conditions = HS_CFG_CANCEL;
 469         hscfg.is_invoke_hostcmd = true;
 470
 471         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 472                                     cmd_type, &hscfg);
 473 }
 474 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 475
 476 /*
 477  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 478  *
 479  * This function allocates the IOCTL request buffer, fills it
 480  * with requisite parameters and calls the IOCTL handler.
 481  */
 482 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 483 {
 484         struct mwifiex_ds_hs_cfg hscfg;
 485         struct mwifiex_private *priv;
 486         int i;
 487
 488         if (disconnect_on_suspend) {
 489                 for (i = 0; i < adapter->priv_num; i++) {
 490                         priv = adapter->priv[i];
 491                         if (priv)
 492                                 mwifiex_deauthenticate(priv, NULL);
 493                 }
 494         }
 495
 496         if (adapter->hs_activated) {
 497                 dev_dbg(adapter->dev, "cmd: HS Already activated\n");
 498                 return true;
 499         }
 500
 501         adapter->hs_activate_wait_q_woken = false;
 502
 503         memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
 504         hscfg.is_invoke_hostcmd = true;
 505
 506         adapter->hs_enabling = true;
 507         mwifiex_cancel_all_pending_cmd(adapter);
 508
 509         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 510                                                    MWIFIEX_BSS_ROLE_STA),
 511                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 512                                   &hscfg)) {
 513                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 514                 return false;
 515         }
 516
 517         if (wait_event_interruptible_timeout(adapter->hs_activate_wait_q,
 518                                              adapter->hs_activate_wait_q_woken,
 519                                              (10 * HZ)) <= 0) {
 520                 dev_err(adapter->dev, "hs_activate_wait_q terminated\n");
 521                 return false;
 522         }
 523
 524         return true;
 525 }
 526 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 527
 528 /*
 529  * IOCTL request handler to get BSS information.
 530  *
 531  * This function collates the information from different driver structures
 532  * to send to the user.
 533  */
 534 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 535                          struct mwifiex_bss_info *info)
 536 {
 537         struct mwifiex_adapter *adapter = priv->adapter;
 538         struct mwifiex_bssdescriptor *bss_desc;
 539
 540         if (!info)
 541                 return -1;
 542
 543         bss_desc = &priv->curr_bss_params.bss_descriptor;
 544
 545         info->bss_mode = priv->bss_mode;
 546
 547         memcpy(&info->ssid, &bss_desc->ssid, sizeof(struct cfg80211_ssid));
 548
 549         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 550
 551         info->bss_chan = bss_desc->channel;
 552
 553         memcpy(info->country_code, adapter->country_code,
 554                IEEE80211_COUNTRY_STRING_LEN);
 555
 556         info->media_connected = priv->media_connected;
 557
 558         info->max_power_level = priv->max_tx_power_level;
 559         info->min_power_level = priv->min_tx_power_level;
 560
 561         info->adhoc_state = priv->adhoc_state;
 562
 563         info->bcn_nf_last = priv->bcn_nf_last;
 564
 565         if (priv->sec_info.wep_enabled)
 566                 info->wep_status = true;
 567         else
 568                 info->wep_status = false;
 569
 570         info->is_hs_configured = adapter->is_hs_configured;
 571         info->is_deep_sleep = adapter->is_deep_sleep;
 572
 573         return 0;
 574 }
 575
 576 /*
 577  * The function disables auto deep sleep mode.
 578  */
 579 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
 580 {
 581         struct mwifiex_ds_auto_ds auto_ds;
 582
 583         auto_ds.auto_ds = DEEP_SLEEP_OFF;
 584
 585         return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 586                                 DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds, true);
 587 }
 588 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
 589
 590 /*
 591  * Sends IOCTL request to get the data rate.
 592  *
 593  * This function allocates the IOCTL request buffer, fills it
 594  * with requisite parameters and calls the IOCTL handler.
 595  */
 596 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv, u32 *rate)
 597 {
 598         int ret;
 599
 600         ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
 601                                HostCmd_ACT_GEN_GET, 0, NULL, true);
 602
 603         if (!ret) {
 604                 if (priv->is_data_rate_auto)
 605                         *rate = mwifiex_index_to_data_rate(priv, priv->tx_rate,
 606                                                            priv->tx_htinfo);
 607                 else
 608                         *rate = priv->data_rate;
 609         }
 610
 611         return ret;
 612 }
 613
 614 /*
 615  * IOCTL request handler to set tx power configuration.
 616  *
 617  * This function prepares the correct firmware command and
 618  * issues it.
 619  *
 620  * For non-auto power mode, all the following power groups are set -
 621  *      - Modulation class HR/DSSS
 622  *      - Modulation class OFDM
 623  *      - Modulation class HTBW20
 624  *      - Modulation class HTBW40
 625  */
 626 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 627                          struct mwifiex_power_cfg *power_cfg)
 628 {
 629         int ret;
 630         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 631         struct mwifiex_types_power_group *pg_tlv;
 632         struct mwifiex_power_group *pg;
 633         u8 *buf;
 634         u16 dbm = 0;
 635
 636         if (!power_cfg->is_power_auto) {
 637                 dbm = (u16) power_cfg->power_level;
 638                 if ((dbm < priv->min_tx_power_level) ||
 639                     (dbm > priv->max_tx_power_level)) {
 640                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 641                                 " is out of range (%d dBm-%d dBm)\n",
 642                                 dbm, priv->min_tx_power_level,
 643                                 priv->max_tx_power_level);
 644                         return -1;
 645                 }
 646         }
 647         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 648         if (!buf)
 649                 return -ENOMEM;
 650
 651         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 652         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 653         if (!power_cfg->is_power_auto) {
 654                 txp_cfg->mode = cpu_to_le32(1);
 655                 pg_tlv = (struct mwifiex_types_power_group *)
 656                          (buf + sizeof(struct host_cmd_ds_txpwr_cfg));
 657                 pg_tlv->type = cpu_to_le16(TLV_TYPE_POWER_GROUP);
 658                 pg_tlv->length =
 659                         cpu_to_le16(4 * sizeof(struct mwifiex_power_group));
 660                 pg = (struct mwifiex_power_group *)
 661                      (buf + sizeof(struct host_cmd_ds_txpwr_cfg)
 662                       + sizeof(struct mwifiex_types_power_group));
 663                 /* Power group for modulation class HR/DSSS */
 664                 pg->first_rate_code = 0x00;
 665                 pg->last_rate_code = 0x03;
 666                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 667                 pg->power_step = 0;
 668                 pg->power_min = (s8) dbm;
 669                 pg->power_max = (s8) dbm;
 670                 pg++;
 671                 /* Power group for modulation class OFDM */
 672                 pg->first_rate_code = 0x00;
 673                 pg->last_rate_code = 0x07;
 674                 pg->modulation_class = MOD_CLASS_OFDM;
 675                 pg->power_step = 0;
 676                 pg->power_min = (s8) dbm;
 677                 pg->power_max = (s8) dbm;
 678                 pg++;
 679                 /* Power group for modulation class HTBW20 */
 680                 pg->first_rate_code = 0x00;
 681                 pg->last_rate_code = 0x20;
 682                 pg->modulation_class = MOD_CLASS_HT;
 683                 pg->power_step = 0;
 684                 pg->power_min = (s8) dbm;
 685                 pg->power_max = (s8) dbm;
 686                 pg->ht_bandwidth = HT_BW_20;
 687                 pg++;
 688                 /* Power group for modulation class HTBW40 */
 689                 pg->first_rate_code = 0x00;
 690                 pg->last_rate_code = 0x20;
 691                 pg->modulation_class = MOD_CLASS_HT;
 692                 pg->power_step = 0;
 693                 pg->power_min = (s8) dbm;
 694                 pg->power_max = (s8) dbm;
 695                 pg->ht_bandwidth = HT_BW_40;
 696         }
 697         ret = mwifiex_send_cmd(priv, HostCmd_CMD_TXPWR_CFG,
 698                                HostCmd_ACT_GEN_SET, 0, buf, true);
 699
 700         kfree(buf);
 701         return ret;
 702 }
 703
 704 /*
 705  * IOCTL request handler to get power save mode.
 706  *
 707  * This function prepares the correct firmware command and
 708  * issues it.
 709  */
 710 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 711 {
 712         int ret;
 713         struct mwifiex_adapter *adapter = priv->adapter;
 714         u16 sub_cmd;
 715
 716         if (*ps_mode)
 717                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 718         else
 719                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 720         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 721         ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 722                                sub_cmd, BITMAP_STA_PS, NULL, true);
 723         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 724                 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 725                                        GET_PS, 0, NULL, false);
 726
 727         return ret;
 728 }
 729
 730 /*
 731  * IOCTL request handler to set/reset WPA IE.
 732  *
 733  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 734  * is checked to determine WPA version. If buffer length is zero, the existing
 735  * WPA IE is reset.
 736  */
 737 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 738                                      u8 *ie_data_ptr, u16 ie_len)
 739 {
 740         if (ie_len) {
 741                 if (ie_len > sizeof(priv->wpa_ie)) {
 742                         dev_err(priv->adapter->dev,
 743                                 "failed to copy WPA IE, too big\n");
 744                         return -1;
 745                 }
 746                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 747                 priv->wpa_ie_len = (u8) ie_len;
 748                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 749                         priv->wpa_ie_len, priv->wpa_ie[0]);
 750
 751                 if (priv->wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC) {
 752                         priv->sec_info.wpa_enabled = true;
 753                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
 754                         priv->sec_info.wpa2_enabled = true;
 755                 } else {
 756                         priv->sec_info.wpa_enabled = false;
 757                         priv->sec_info.wpa2_enabled = false;
 758                 }
 759         } else {
 760                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
 761                 priv->wpa_ie_len = 0;
 762                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
 763                         priv->wpa_ie_len, priv->wpa_ie[0]);
 764                 priv->sec_info.wpa_enabled = false;
 765                 priv->sec_info.wpa2_enabled = false;
 766         }
 767
 768         return 0;
 769 }
 770
 771 /*
 772  * IOCTL request handler to set/reset WAPI IE.
 773  *
 774  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
 775  * is checked to internally enable WAPI. If buffer length is zero, the existing
 776  * WAPI IE is reset.
 777  */
 778 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
 779                                u8 *ie_data_ptr, u16 ie_len)
 780 {
 781         if (ie_len) {
 782                 if (ie_len > sizeof(priv->wapi_ie)) {
 783                         dev_dbg(priv->adapter->dev,
 784                                 "info: failed to copy WAPI IE, too big\n");
 785                         return -1;
 786                 }
 787                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
 788                 priv->wapi_ie_len = ie_len;
 789                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
 790                         priv->wapi_ie_len, priv->wapi_ie[0]);
 791
 792                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
 793                         priv->sec_info.wapi_enabled = true;
 794         } else {
 795                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
 796                 priv->wapi_ie_len = ie_len;
 797                 dev_dbg(priv->adapter->dev,
 798                         "info: Reset wapi_ie_len=%d IE=%#x\n",
 799                        priv->wapi_ie_len, priv->wapi_ie[0]);
 800                 priv->sec_info.wapi_enabled = false;
 801         }
 802         return 0;
 803 }
 804
 805 /*
 806  * IOCTL request handler to set/reset WPS IE.
 807  *
 808  * The supplied WPS IE is treated as a opaque buffer. Only the first field
 809  * is checked to internally enable WPS. If buffer length is zero, the existing
 810  * WPS IE is reset.
 811  */
 812 static int mwifiex_set_wps_ie(struct mwifiex_private *priv,
 813                                u8 *ie_data_ptr, u16 ie_len)
 814 {
 815         if (ie_len) {
 816                 if (ie_len > MWIFIEX_MAX_VSIE_LEN) {
 817                         dev_dbg(priv->adapter->dev,
 818                                 "info: failed to copy WPS IE, too big\n");
 819                         return -1;
 820                 }
 821
 822                 priv->wps_ie = kzalloc(MWIFIEX_MAX_VSIE_LEN, GFP_KERNEL);
 823                 if (!priv->wps_ie)
 824                         return -ENOMEM;
 825
 826                 memcpy(priv->wps_ie, ie_data_ptr, ie_len);
 827                 priv->wps_ie_len = ie_len;
 828                 dev_dbg(priv->adapter->dev, "cmd: Set wps_ie_len=%d IE=%#x\n",
 829                         priv->wps_ie_len, priv->wps_ie[0]);
 830         } else {
 831                 kfree(priv->wps_ie);
 832                 priv->wps_ie_len = ie_len;
 833                 dev_dbg(priv->adapter->dev,
 834                         "info: Reset wps_ie_len=%d\n", priv->wps_ie_len);
 835         }
 836         return 0;
 837 }
 838
 839 /*
 840  * IOCTL request handler to set WAPI key.
 841  *
 842  * This function prepares the correct firmware command and
 843  * issues it.
 844  */
 845 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
 846                                struct mwifiex_ds_encrypt_key *encrypt_key)
 847 {
 848
 849         return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 850                                 HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
 851                                 encrypt_key, true);
 852 }
 853
 854 /*
 855  * IOCTL request handler to set WEP network key.
 856  *
 857  * This function prepares the correct firmware command and
 858  * issues it, after validation checks.
 859  */
 860 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
 861                               struct mwifiex_ds_encrypt_key *encrypt_key)
 862 {
 863         struct mwifiex_adapter *adapter = priv->adapter;
 864         int ret;
 865         struct mwifiex_wep_key *wep_key;
 866         int index;
 867
 868         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
 869                 priv->wep_key_curr_index = 0;
 870         wep_key = &priv->wep_key[priv->wep_key_curr_index];
 871         index = encrypt_key->key_index;
 872         if (encrypt_key->key_disable) {
 873                 priv->sec_info.wep_enabled = 0;
 874         } else if (!encrypt_key->key_len) {
 875                 /* Copy the required key as the current key */
 876                 wep_key = &priv->wep_key[index];
 877                 if (!wep_key->key_length) {
 878                         dev_err(adapter->dev,
 879                                 "key not set, so cannot enable it\n");
 880                         return -1;
 881                 }
 882
 883                 if (adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2) {
 884                         memcpy(encrypt_key->key_material,
 885                                wep_key->key_material, wep_key->key_length);
 886                         encrypt_key->key_len = wep_key->key_length;
 887                 }
 888
 889                 priv->wep_key_curr_index = (u16) index;
 890                 priv->sec_info.wep_enabled = 1;
 891         } else {
 892                 wep_key = &priv->wep_key[index];
 893                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 894                 /* Copy the key in the driver */
 895                 memcpy(wep_key->key_material,
 896                        encrypt_key->key_material,
 897                        encrypt_key->key_len);
 898                 wep_key->key_index = index;
 899                 wep_key->key_length = encrypt_key->key_len;
 900                 priv->sec_info.wep_enabled = 1;
 901         }
 902         if (wep_key->key_length) {
 903                 void *enc_key;
 904
 905                 if (encrypt_key->key_disable)
 906                         memset(&priv->wep_key[index], 0,
 907                                sizeof(struct mwifiex_wep_key));
 908
 909                 if (adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2)
 910                         enc_key = encrypt_key;
 911                 else
 912                         enc_key = NULL;
 913
 914                 /* Send request to firmware */
 915                 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 916                                        HostCmd_ACT_GEN_SET, 0, enc_key, false);
 917                 if (ret)
 918                         return ret;
 919         }
 920
 921         if (priv->sec_info.wep_enabled)
 922                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
 923         else
 924                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
 925
 926         ret = mwifiex_send_cmd(priv, HostCmd_CMD_MAC_CONTROL,
 927                                HostCmd_ACT_GEN_SET, 0,
 928                                &priv->curr_pkt_filter, true);
 929
 930         return ret;
 931 }
 932
 933 /*
 934  * IOCTL request handler to set WPA key.
 935  *
 936  * This function prepares the correct firmware command and
 937  * issues it, after validation checks.
 938  *
 939  * Current driver only supports key length of up to 32 bytes.
 940  *
 941  * This function can also be used to disable a currently set key.
 942  */
 943 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
 944                               struct mwifiex_ds_encrypt_key *encrypt_key)
 945 {
 946         int ret;
 947         u8 remove_key = false;
 948         struct host_cmd_ds_802_11_key_material *ibss_key;
 949
 950         /* Current driver only supports key length of up to 32 bytes */
 951         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
 952                 dev_err(priv->adapter->dev, "key length too long\n");
 953                 return -1;
 954         }
 955
 956         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 957                 /*
 958                  * IBSS/WPA-None uses only one key (Group) for both receiving
 959                  * and sending unicast and multicast packets.
 960                  */
 961                 /* Send the key as PTK to firmware */
 962                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 963                 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 964                                        HostCmd_ACT_GEN_SET,
 965                                        KEY_INFO_ENABLED, encrypt_key, false);
 966                 if (ret)
 967                         return ret;
 968
 969                 ibss_key = &priv->aes_key;
 970                 memset(ibss_key, 0,
 971                        sizeof(struct host_cmd_ds_802_11_key_material));
 972                 /* Copy the key in the driver */
 973                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
 974                        encrypt_key->key_len);
 975                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
 976                        sizeof(ibss_key->key_param_set.key_len));
 977                 ibss_key->key_param_set.key_type_id
 978                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
 979                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
 980
 981                 /* Send the key as GTK to firmware */
 982                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
 983         }
 984
 985         if (!encrypt_key->key_index)
 986                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 987
 988         if (remove_key)
 989                 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 990                                        HostCmd_ACT_GEN_SET,
 991                                        !KEY_INFO_ENABLED, encrypt_key, true);
 992         else
 993                 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 994                                        HostCmd_ACT_GEN_SET,
 995                                        KEY_INFO_ENABLED, encrypt_key, true);
 996
 997         return ret;
 998 }
 999
1000 /*
1001  * IOCTL request handler to set/get network keys.
1002  *
1003  * This is a generic key handling function which supports WEP, WPA
1004  * and WAPI.
1005  */
1006 static int
1007 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
1008                               struct mwifiex_ds_encrypt_key *encrypt_key)
1009 {
1010         int status;
1011
1012         if (encrypt_key->is_wapi_key)
1013                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1014         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1015                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1016         else
1017                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
1018         return status;
1019 }
1020
1021 /*
1022  * This function returns the driver version.
1023  */
1024 int
1025 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
1026                                int max_len)
1027 {
1028         union {
1029                 __le32 l;
1030                 u8 c[4];
1031         } ver;
1032         char fw_ver[32];
1033
1034         ver.l = cpu_to_le32(adapter->fw_release_number);
1035         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1036
1037         snprintf(version, max_len, driver_version, fw_ver);
1038
1039         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1040
1041         return 0;
1042 }
1043
1044 /*
1045  * Sends IOCTL request to set encoding parameters.
1046  *
1047  * This function allocates the IOCTL request buffer, fills it
1048  * with requisite parameters and calls the IOCTL handler.
1049  */
1050 int mwifiex_set_encode(struct mwifiex_private *priv, struct key_params *kp,
1051                        const u8 *key, int key_len, u8 key_index,
1052                        const u8 *mac_addr, int disable)
1053 {
1054         struct mwifiex_ds_encrypt_key encrypt_key;
1055
1056         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1057         encrypt_key.key_len = key_len;
1058         encrypt_key.key_index = key_index;
1059
1060         if (kp && kp->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1061                 encrypt_key.is_igtk_key = true;
1062
1063         if (!disable) {
1064                 if (key_len)
1065                         memcpy(encrypt_key.key_material, key, key_len);
1066                 else
1067                         encrypt_key.is_current_wep_key = true;
1068
1069                 if (mac_addr)
1070                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1071                 if (kp && kp->seq && kp->seq_len) {
1072                         memcpy(encrypt_key.pn, kp->seq, kp->seq_len);
1073                         encrypt_key.pn_len = kp->seq_len;
1074                         encrypt_key.is_rx_seq_valid = true;
1075                 }
1076         } else {
1077                 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP)
1078                         return 0;
1079                 encrypt_key.key_disable = true;
1080                 if (mac_addr)
1081                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1082         }
1083
1084         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1085 }
1086
1087 /*
1088  * Sends IOCTL request to get extended version.
1089  *
1090  * This function allocates the IOCTL request buffer, fills it
1091  * with requisite parameters and calls the IOCTL handler.
1092  */
1093 int
1094 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1095 {
1096         struct mwifiex_ver_ext ver_ext;
1097
1098         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1099         if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
1100                              HostCmd_ACT_GEN_GET, 0, &ver_ext, true))
1101                 return -1;
1102
1103         return 0;
1104 }
1105
1106 int
1107 mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
1108                            struct ieee80211_channel *chan,
1109                            unsigned int duration)
1110 {
1111         struct host_cmd_ds_remain_on_chan roc_cfg;
1112         u8 sc;
1113
1114         memset(&roc_cfg, 0, sizeof(roc_cfg));
1115         roc_cfg.action = cpu_to_le16(action);
1116         if (action == HostCmd_ACT_GEN_SET) {
1117                 roc_cfg.band_cfg = chan->band;
1118                 sc = mwifiex_chan_type_to_sec_chan_offset(NL80211_CHAN_NO_HT);
1119                 roc_cfg.band_cfg |= (sc << 2);
1120
1121                 roc_cfg.channel =
1122                         ieee80211_frequency_to_channel(chan->center_freq);
1123                 roc_cfg.duration = cpu_to_le32(duration);
1124         }
1125         if (mwifiex_send_cmd(priv, HostCmd_CMD_REMAIN_ON_CHAN,
1126                              action, 0, &roc_cfg, true)) {
1127                 dev_err(priv->adapter->dev, "failed to remain on channel\n");
1128                 return -1;
1129         }
1130
1131         return roc_cfg.status;
1132 }
1133
1134 int
1135 mwifiex_set_bss_role(struct mwifiex_private *priv, u8 bss_role)
1136 {
1137         if (GET_BSS_ROLE(priv) == bss_role) {
1138                 dev_dbg(priv->adapter->dev,
1139                         "info: already in the desired role.\n");
1140                 return 0;
1141         }
1142
1143         mwifiex_free_priv(priv);
1144         mwifiex_init_priv(priv);
1145
1146         priv->bss_role = bss_role;
1147         switch (bss_role) {
1148         case MWIFIEX_BSS_ROLE_UAP:
1149                 priv->bss_mode = NL80211_IFTYPE_AP;
1150                 break;
1151         case MWIFIEX_BSS_ROLE_STA:
1152         case MWIFIEX_BSS_ROLE_ANY:
1153         default:
1154                 priv->bss_mode = NL80211_IFTYPE_STATION;
1155                 break;
1156         }
1157
1158         mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
1159                          HostCmd_ACT_GEN_SET, 0, NULL, true);
1160
1161         return mwifiex_sta_init_cmd(priv, false);
1162 }
1163
1164 /*
1165  * Sends IOCTL request to get statistics information.
1166  *
1167  * This function allocates the IOCTL request buffer, fills it
1168  * with requisite parameters and calls the IOCTL handler.
1169  */
1170 int
1171 mwifiex_get_stats_info(struct mwifiex_private *priv,
1172                        struct mwifiex_ds_get_stats *log)
1173 {
1174         return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_GET_LOG,
1175                                 HostCmd_ACT_GEN_GET, 0, log, true);
1176 }
1177
1178 /*
1179  * IOCTL request handler to read/write register.
1180  *
1181  * This function prepares the correct firmware command and
1182  * issues it.
1183  *
1184  * Access to the following registers are supported -
1185  *      - MAC
1186  *      - BBP
1187  *      - RF
1188  *      - PMIC
1189  *      - CAU
1190  */
1191 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1192                                         struct mwifiex_ds_reg_rw *reg_rw,
1193                                         u16 action)
1194 {
1195         u16 cmd_no;
1196
1197         switch (le32_to_cpu(reg_rw->type)) {
1198         case MWIFIEX_REG_MAC:
1199                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1200                 break;
1201         case MWIFIEX_REG_BBP:
1202                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1203                 break;
1204         case MWIFIEX_REG_RF:
1205                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1206                 break;
1207         case MWIFIEX_REG_PMIC:
1208                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1209                 break;
1210         case MWIFIEX_REG_CAU:
1211                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1212                 break;
1213         default:
1214                 return -1;
1215         }
1216
1217         return mwifiex_send_cmd(priv, cmd_no, action, 0, reg_rw, true);
1218 }
1219
1220 /*
1221  * Sends IOCTL request to write to a register.
1222  *
1223  * This function allocates the IOCTL request buffer, fills it
1224  * with requisite parameters and calls the IOCTL handler.
1225  */
1226 int
1227 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1228                   u32 reg_offset, u32 reg_value)
1229 {
1230         struct mwifiex_ds_reg_rw reg_rw;
1231
1232         reg_rw.type = cpu_to_le32(reg_type);
1233         reg_rw.offset = cpu_to_le32(reg_offset);
1234         reg_rw.value = cpu_to_le32(reg_value);
1235
1236         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1237 }
1238
1239 /*
1240  * Sends IOCTL request to read from a register.
1241  *
1242  * This function allocates the IOCTL request buffer, fills it
1243  * with requisite parameters and calls the IOCTL handler.
1244  */
1245 int
1246 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1247                  u32 reg_offset, u32 *value)
1248 {
1249         int ret;
1250         struct mwifiex_ds_reg_rw reg_rw;
1251
1252         reg_rw.type = cpu_to_le32(reg_type);
1253         reg_rw.offset = cpu_to_le32(reg_offset);
1254         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1255
1256         if (ret)
1257                 goto done;
1258
1259         *value = le32_to_cpu(reg_rw.value);
1260
1261 done:
1262         return ret;
1263 }
1264
1265 /*
1266  * Sends IOCTL request to read from EEPROM.
1267  *
1268  * This function allocates the IOCTL request buffer, fills it
1269  * with requisite parameters and calls the IOCTL handler.
1270  */
1271 int
1272 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1273                     u8 *value)
1274 {
1275         int ret;
1276         struct mwifiex_ds_read_eeprom rd_eeprom;
1277
1278         rd_eeprom.offset = cpu_to_le16((u16) offset);
1279         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1280
1281         /* Send request to firmware */
1282         ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1283                                HostCmd_ACT_GEN_GET, 0, &rd_eeprom, true);
1284
1285         if (!ret)
1286                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1287         return ret;
1288 }
1289
1290 /*
1291  * This function sets a generic IE. In addition to generic IE, it can
1292  * also handle WPA, WPA2 and WAPI IEs.
1293  */
1294 static int
1295 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1296                           u16 ie_len)
1297 {
1298         int ret = 0;
1299         struct ieee_types_vendor_header *pvendor_ie;
1300         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1301         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1302
1303         /* If the passed length is zero, reset the buffer */
1304         if (!ie_len) {
1305                 priv->gen_ie_buf_len = 0;
1306                 priv->wps.session_enable = false;
1307
1308                 return 0;
1309         } else if (!ie_data_ptr) {
1310                 return -1;
1311         }
1312         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1313         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1314         if (((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1315              (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui)))) ||
1316             (pvendor_ie->element_id == WLAN_EID_RSN)) {
1317
1318                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1319                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1320                 priv->wps.session_enable = false;
1321
1322                 return ret;
1323         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1324                 /* IE is a WAPI IE so call set_wapi function */
1325                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1326
1327                 return ret;
1328         }
1329         /*
1330          * Verify that the passed length is not larger than the
1331          * available space remaining in the buffer
1332          */
1333         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1334
1335                 /* Test to see if it is a WPS IE, if so, enable
1336                  * wps session flag
1337                  */
1338                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1339                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1340                     (!memcmp(pvendor_ie->oui, wps_oui, sizeof(wps_oui)))) {
1341                         priv->wps.session_enable = true;
1342                         dev_dbg(priv->adapter->dev,
1343                                 "info: WPS Session Enabled.\n");
1344                         ret = mwifiex_set_wps_ie(priv, ie_data_ptr, ie_len);
1345                 }
1346
1347                 /* Append the passed data to the end of the
1348                    genIeBuffer */
1349                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1350                        ie_len);
1351                 /* Increment the stored buffer length by the
1352                    size passed */
1353                 priv->gen_ie_buf_len += ie_len;
1354         } else {
1355                 /* Passed data does not fit in the remaining
1356                    buffer space */
1357                 ret = -1;
1358         }
1359
1360         /* Return 0, or -1 for error case */
1361         return ret;
1362 }
1363
1364 /*
1365  * IOCTL request handler to set/get generic IE.
1366  *
1367  * In addition to various generic IEs, this function can also be
1368  * used to set the ARP filter.
1369  */
1370 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1371                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1372                                      u16 action)
1373 {
1374         struct mwifiex_adapter *adapter = priv->adapter;
1375
1376         switch (gen_ie->type) {
1377         case MWIFIEX_IE_TYPE_GEN_IE:
1378                 if (action == HostCmd_ACT_GEN_GET) {
1379                         gen_ie->len = priv->wpa_ie_len;
1380                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1381                 } else {
1382                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1383                                                   (u16) gen_ie->len);
1384                 }
1385                 break;
1386         case MWIFIEX_IE_TYPE_ARP_FILTER:
1387                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1388                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1389                         adapter->arp_filter_size = 0;
1390                         dev_err(adapter->dev, "invalid ARP filter size\n");
1391                         return -1;
1392                 } else {
1393                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1394                                gen_ie->len);
1395                         adapter->arp_filter_size = gen_ie->len;
1396                 }
1397                 break;
1398         default:
1399                 dev_err(adapter->dev, "invalid IE type\n");
1400                 return -1;
1401         }
1402         return 0;
1403 }
1404
1405 /*
1406  * Sends IOCTL request to set a generic IE.
1407  *
1408  * This function allocates the IOCTL request buffer, fills it
1409  * with requisite parameters and calls the IOCTL handler.
1410  */
1411 int
1412 mwifiex_set_gen_ie(struct mwifiex_private *priv, const u8 *ie, int ie_len)
1413 {
1414         struct mwifiex_ds_misc_gen_ie gen_ie;
1415
1416         if (ie_len > IEEE_MAX_IE_SIZE)
1417                 return -EFAULT;
1418
1419         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1420         gen_ie.len = ie_len;
1421         memcpy(gen_ie.ie_data, ie, ie_len);
1422         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1423                 return -EFAULT;
1424
1425         return 0;
1426 }